Manufacture of alkali metals.



UNITED STATES PATENT oFFIcE. I i

HEINRICH SPECKETER AND WILHELM HOFMANN, OF GRIESHEIM-ON-THE-MAIN,

V GERMANY, ASSIGNORS TO CHEMISCHE FABRIK GRIESHEIM-ELEKTBON, OE FRANK- FORT-ON-THE-MAIN, GERMANY, A CORPORATION OF GERMANY;

X MANUFACTURE or ALKALI METALS.

No Drawing.

To all who-m, at may concern:

Be it known that we, HEINRICH SPECK-I n'rnn and WILHELM 'I'IOFMANN, sub ects of German Emperor, and residents of Grleshelm-on-the-Maln, Germany,- have mvented certain new and useful Improvements in the Manufacture of Alkali Metals,

Y of whichthe'following is a specification.

alkali metal.

The presentinvention has for its object the manufacture oif-alkali metals and consists in causing calcium carbid to act on alkali sulfid at the distilling temperature of the alkali metal and then distilling off the Eammples.

1r s+cac.:21 +2o+ca.s.- Instead of employing the ready made Specification of Letters lateiits Patented uly 30, .1912, Application filed January 3', 1910. Serial No. 535,956,

alkali sulfid, the process may be carried out by reducing, by means of carbon, the corresponding sulfate, tofthe sulfid, and then introducing the carbid, the alkali metal dis tilling oft. i s 1 We claim:

1. The-herein. described process of manu-I- facturing alkali metals, which consists in heating a sulfid of the metal with the carbid. of a metal which will combine with the sulfur, and distilling off the alkali metal.

- 2. The herein described process of-manufacturing. alkali metals which consists in a heating a mixture of the ca'rbid of an alka line earth metal with a sulfid of an alkali metal at the distilling temperature ofthe alkali metal metal.

3. The herein described process of ma-nu and distilling ofi' the alkali 

